赤口
also: しゃっく · じゃっく · じゃっこう · せきぐち
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Meanings
1
One of the six traditional calendar days (六曜). Considered unlucky for most activities, but the two-hour period around noon (11am–1pm) is auspicious. Often checked for weddings, funerals, and other important events.
See also: 六曜
Today is Shakkou, so it's said that you should avoid important contracts.
Even on a Shakkou day, the period from 11am to 1pm is considered auspicious.